Micro-arc spot welding process for secondary coil terminal lug

A secondary coil and lug technology, applied in arc welding equipment, coil manufacturing, manufacturing tools, etc., can solve problems such as human body and environmental damage, tip discharge, solder paste corrosion, etc., to improve durability and prevent tip discharge , The effect of high spot welding efficiency

Inactive Publication Date: 2009-10-07
北京慨尔康科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soldering iron soldering is manual operation, there is lead in the solder, and the solder paste is corrosive to a certain extent. The soldering

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0009] The embodiment is the micro-arc spot welding of the QSn6.5 secondary coil lug with a thickness of 0.4 mm.

[0010] First, use fine sandpaper to polish the winding part of the secondary coil lug to remove the oxide layer.

[0011] Secondly, use PC-PAS301t micro-arc spot welding device made in Korea to carry out micro-arc spot welding. The power supply adopts the positive polarity connection method, and at the same time, the positive end of the power supply is connected in parallel to the secondary coil lug through a contactor. And set the following parameters: Tungsten cerium tungsten, diameter 0.8mm, nozzle 1.2mm, welding current 16A, spot welding time 50ms, shielding gas is argon, working gas flow rate is 0.5L / min, shielding gas flow rate is 0.5L / min.

[0012] When welding, first place the winding part on the secondary coil lug vertically, the welding torch has a forward inclination angle of 80°~90°, and there is a gap between the nozzle and the upper end surface of ...

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Abstract

The invention relates to a micro-arc spot welding process for the secondary coil terminal lug of an ignition coil, comprising the two steps of removing oxidation layer and micro-arc spot welding. Firstly, the winding position of the secondary coil terminal lug is polished by a fine emery paper; subsequently, the micro-arc spot welding is carried out at the winding position according to the setup parameters and the operation standard so as to lead the melted metal to form a solder joint ball, thus covering the secondary winding end at the winding position of the secondary coil terminal lug; and after arc-extinguishing, the argon is postponed to be closed for 0.5 seconds so as to protect the cooling and solidification of the solder joint ball. Compared with the general electric soldering iron welding process, the micro-arc welding process has the advantages of containing no lead, environment protection, having no harm to human, high spot welding efficiency, smooth solder joint ball, covering the secondary winding end at the winding position of the secondary coil terminal lug, thus preventing point discharge and improving the durability of the ignition coil.

Description

technical field [0001] The invention relates to a welding process, in particular to a micro-arc spot welding process for a secondary coil lug of an ignition coil. Background technique [0002] The welding of the secondary coil lugs of the ignition coil usually adopts the soldering iron welding process. Before soldering, first remove the oxide layer on the lug, polish it with fine sandpaper and apply a layer of solder paste; secondly, use a tinned thermoelectric soldering iron tip to tin-plate the lug. When soldering, the angle between the soldering iron and the horizontal plane is 60°, so that the molten tin flows from the tip of the soldering iron to the lug, and the soldering time is 1 to 3 seconds. After soldering, the position of the lug remains unchanged until the tin at the solder joint is cooled and solidified. Soldering with an electric soldering iron is a manual operation. There is lead in the solder, and the solder paste is corrosive to a certain extent. The sold...

Claims

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Application Information

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IPC IPC(8): H01F41/04B23K9/007
Inventor 石力强童彬
Owner 北京慨尔康科技发展有限公司
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